non-k multiplier OC?

[grandpatzer]

Ive read online you can with P67 add 4 or 5 multis to locked sandy bridges turbo boost is this correct?

couple of examples:

So the i5 2400 is Turbo boost 4 cores 3.2ghz(32*100)

however with P67 you can get this to 3.6ghz(36*100) on all 4 cores?

So the i5 2300 is Turbo boost 4 cores 2.9ghz(29*100)

however with P67 you can get this to 3.3ghz(33*100) on all 4 cores?

 

[seumasbeathan]

I have never heard this although would be very interesting to see if it is true

 

[blaindev]

think of it in terms of the 3820 i7, you can through stepping on the non-unlocked CPU achieve 4.3 or 4.75 (some people have even gone higher with more volts) but as for the i5/i7 sandy series locked chips, i aint too sure if it is the case, im sure there are ways to raise the base clock, just got to hunt around

 

[Master&Puppet]

It's not quite the same as the 3820:

The 'non k' i5s and i7s have a partially unlocked multiplier so you can increase the turbo multiplier by +4.

The 3820 is unique because it has no iGPU and has baseclock profiles so most people set it to 125mhz and then play with the multipler and you can get well into the mid 4 ghz stable on them quite easily.

The 1155 i5s and i7s have a iGPU which do not like having the base clock increased beyond about 105. So you are limited to getting about 3.8ghz on these.

 

[blaindev]

The 3820 is unique because it has no iGPU and has baseclock profiles so most people set it to 125mhz and then play with the multipler and you can get well into the mid 4 ghz stable on them quite easily.

The 1155 i5s and i7s have a iGPU which do not like having the base clock increased beyond about 105. So you are limited to getting about 3.8ghz on these.

forgot about the 3820 not having onboard graphics built into the CPU, good call!

 

[grandpatzer]

[font=verdana, arial, helvetica, sans-serif]Ive also read that the BCLK OC damage to CPU is completely BS(?), so I could maybe put BCLK to 105 so:[/font]

[font=verdana, arial, helvetica, sans-serif]i5 2310: 1,05*3.4ghz= 3.57ghz [/font]on all 4 cores.

[font=verdana, arial, helvetica, sans-serif]Seems like if a game uses 4 cores and I have good cooling then I could play for hours with a i5 2310@3.57ghz on all 4 cores then.[/font]

[font=verdana, arial, helvetica, sans-serif]imo 15-20% OC is actually pretty decent.[/font]

[font=verdana, arial, helvetica, sans-serif]I'm going to buy a used i5 2310 for cheap and sell my thuban x6, seems like it's going to be decent choice as I'm breaking even on $.[/font]

 

[airdeano]

its not damage, but changing the base clock frequency changes alot of

other support systems. you got RAM, GPU and PCI-e that depend on

that frequency and when its changed, you should make consessional

changes in their parts. and most don't change BIOS in GPU, adjust RAM

for a bump in change, and the PCI-e lanes. kinda gives a boost, but when

pushed to like a 120 bclk, the system won't boot due to the other systems

dont know what to do at 120MHz.

airdeano

airdeano

 

[Firat]

It's not quite the same as the 3820:

The 'non k' i5s and i7s have a partially unlocked multiplier so you can increase the turbo multiplier by +4.

The 3820 is unique because it has no iGPU and has baseclock profiles so most people set it to 125mhz and then play with the multipler and you can get well into the mid 4 ghz stable on them quite easily.

The 1155 i5s and i7s have a iGPU which do not like having the base clock increased beyond about 105. So you are limited to getting about 3.8ghz on these.

If what you are saying is true couldn't we OC the baseclock on the i5 2550k (no igp)? Just curious

 

[SavageCupcake]

^^ exactly what i was thinking mate

 

[Mrboxfacetramp]

/\ /\ Good minds all think a like ;]

 

[airdeano]

If what you are saying is true couldn't we OC the baseclock on the i5 2550k (no igp)? Just curious

it is still a 2500k just with a GPU tagout. but ive seen where OC have included

BCLK increases. the best was a 108MHz? but the video didnt lock onto the

screen too long. our small OC softies only touch the surface of parameters.

64MB bios, thats alotta info for the scant menus we play with. a hex editor

could open the file, but unless you have the addy of specific switches it'll

corupt oh too easy. same think when were programming GM LSx engine

packages. the code was there, but no map or index telling us where any

thing is or does. trial and error and several PCM with patient customers

and employees.. we got it done.

airdeano

 

[grandpatzer]

Here's my plan: put my i5 2310 to vcore 1.35v, increase turbo boost by +4 to 34*100= 3400mhz on 4 cores in turbo mode.

Once I verify that it gets 3.4ghz on all 4 cores in prime95 I'll start considering the BCLK.

Is a BCLK of 105 safe?

Any voltage or damage I need to be aware off?

 

[AverageNinja]

That would be really interesting if that's true!

 

[airdeano]

correct, but there are limitations on canned overclocking methods. because you can

generally OC nok-k SB/IB on a blck, there are no other provisions to compensate for

the increased blck. i think the video world has a 10-12% increase on turbo mode.

airdeano

 

[grandpatzer]

correct, but there are limitations on canned overclocking methods. because you can

generally OC nok-k SB/IB on a blck, there are no other provisions to compensate for

the increased blck. i think the video world has a 10-12% increase on turbo mode.

airdeano

Do you mean overclocking turbo +4 also adds 10-12% on intel iGPU?

 

[Master&Puppet]

Do you mean overclocking turbo +4 also adds 10-12% on intel iGPU?

If what you are saying is true couldn't we OC the baseclock on the i5 2550k (no igp)? Just curious

Well yes, and no, ish to both!

I'm going to use a music metaphor to hopefully explain this:

It's like an orchestra - all the components are have separate parts to play with different rhythms but they all interact at the same speed (the tempo directed by the conductor).

Everything is led by the cpu's baseclock - it is the speed at which the system talks to each other. (This is also known as the QPI)

If you change the baseclock then you change the speed at which all the components have to talk to each other. On intel i3, i5 and i7 processors, generally speaking, this could include the RAM speed, pcie speed, igpu speed and the cpu.

For whatever reason sandy doesn't like this. It prefers to alter the multiplier rather than the bclk. The relationship between the baseclock and multiplier is this:

The bclk is the speed at which the components report their work to one another - so 100mhz means that the components talk to each other 100 times a second.

The multiplier is the amount of work the component does within each reporting period. So if a component works at 10x multiplier it will do 10 bits of work within each 100mhz reporting period - so to the outside world looking in it is working at 100x10 = 1ghz.

I haven't owned a SB chip but certainly on Clarkdale you could disable the igpu or unlink it from the bclk along with the reducing the mulipliers on the cpu and ram to see how far you could push the bclk. I haven't seen a 2550k which OC'd on the bclk so I guess the rest of the links don't like it either.

 

[airdeano]

Well yes, and no, ish to both!

Everything is led by the cpu's baseclock - it is the speed at which the system talks to each other. (This is also known as the QPI)

If you change the baseclock then you change the speed at which all the components have to talk to each other. On intel i3, i5 and i7 processors, generally speaking, this could include the RAM speed, pcie speed, igpu speed and the cpu.

yeah, i said that all earlier.. +1

airdeano

 

[SubTract]

if you're adjusting the baseclock just make sure that you change your memory multiplier so that you're only OCing one thing at a time. your HTT should be fine aslong as you have a decent board, PCI bus shouldn't change with baseclock.

 

[airdeano]

but he is using a multi locked CPU (non-k/x)..

airdeano